Download Traits and Inheritance 4

Traits and Inheritance 4.2
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Gene- instructions for inherited traits. (like a
recipe)
Allele- different versions of the same gene.
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Phenotype- how the trait is seen. For
example the purple flower.
Genotype- how the genes are written. The
genotype for a purple flower would be Pp or
PP.
Homozygous-the genes are the same: PP or
pp
Heterozygous-the genes are different Pp
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Punnett Square- an organizer that helps
display the combinations of offspring
characteristics from the parents information.
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Probability- the mathmatical chance of something
happening.
Incomplete dominance- when multiple alleles play a
role in the phenotype. For example a red flower
crossing with a white flower creating a pink flower.
Both colors played a part in the outcome.
Some gene influences more than one trait. For
example the gene that influences the tigers fur to be
white it also influences the eyes to be blue.
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Some traits are a result of multiple genes
working together. For example eye color is a
result of 2 or more genes, that is why eye
color varies greatly.
Environment can also play a role in the
outcome. For example a person may have
the genetics to be tall but a poor diet will not
allow a person to grow as tall.